Device for operating hinged or similar members



Jan. 30, 1923.

. 1,443,694 J. MCKECHNIE.

DEVICE FOR OPERATING HINGED 0R EMILAR MEMBl-RRS.

FILED FEB- 3, IQZQA Patented Jan. 30, 1923.

UNITED stares mm orri a JAMES MCKECHNIE, OE BARROW-IN-FURNESS, ENGLAND,ASSIGNOR T0 VICKERS LIMITED, OF WESTMINSTER, ENGLAND. 1

DEVICE FOR OPERATING HINGED OR SIMILAR MEMBERS. a

Application filed Februar 3,1920. Seria1'No.c3 56, 094.

such as a hinged cover is employed for closing in a-water-tight manner.the top of a funnel or an opening in the deck through WhlCll opening atelescopic funnel may pass or relatively to which opening a funnel maybehinged, the said device being of the k nd comprising a shaft providedwith an oscillatory radial vane or piston arranged within a cylinder andadapted to be operated by.

liquid under pressure admitted alternately between opposite faces of thepiston and corresponding abutment pieces within the cylinder, therebyenabling the shaft to be moved angularly so as to actuate a memberoperatively connected thereto.

According to this invention the memberactuating shaft extendsconcentrically through the workin cylinderwhich has stufl- I ing boxesand glands at its opposite endsfor said shaft to pass through; withinthe-cylinder is an abutment piece extending across the space betweensaid cylinder and shaft and the shaft carries the oscillatory vane orpiston which also extends across said annular space. This oscillatoryvane or piston is formed with inlet and exhaust ports and carries avalve for controlling said ports in such manner that a free flow ofpressure fluid is permitted at the commencement of the operativemovement of the vane or piston and a restricted flow of the exhaust atthe termination of said operative movement. The said valve is preferablyin the form of a spherical non-return valve which is actuated directlyby the pressure fluid itself.

In order that the said invention may be clearly understood and readilycarried into effect the same will now be described more fully withreference to the accompanying example ;illustrated by the drawings; inwhich; I I i i 1 q Figure 1 is a longitudinal vertical section ofthesaid device and Figure" 2 is asection' X-X of Figure l.

a denotes the angularly movable or oscillatory shaft, to which thehinged member is fixed in any appropriate manner, the said shafthaving'secured thereto the vane or pis ten 7) arranged to operate withinthecylinder c in an a'nnular's pace (Z provided be-f tween the shaftandthe cylinder. Disposed within the said space and secured to thecylinder by means of screws 6 is a segmental member efprovided withfaces 7, 9 (Figure 2) serving as abutments. The said shaft is adapted tobe operated preferably through the medium of oil under pressure which isadmitted through the port Z to the space between the abutment f'and theface it of the piston when the shaft is to be moved angularly in thedirection of the arrow z'fwhile the port m is open to exhaust. [Toeffect the reverse movement of the piston oil under pressure is admittedthrough the port on to the space between the abutment g and the face 7'of the piston while the port Z is open to exhaust,- the shaft being thuscaused to move angularlyin the direction of the arrow is. The said portsZ we are connected by appropriate piping provided with a controlvalve marranged in such a manner. that each of the said ports Z, mcan servealternately as aninlet and an exhaust port as 7 above stated accordingas the handle m of the control valve is placed in its full line positionor its dotted line position. As the' weight of the hinged member to beoperated by the shaft a may be considerable provision is made to checkthe momentum of the i I i ure 2, will be prevented by the non-returnvalve being held on its seating by the oil 100 abutment f when thepiston is approaching the position represented by full lines in Fig--taken on the line acting through the port 0 with the result that thesaid oil is only able to escape through the restricted passage orleakage port q. The motive fluid passage z-with \vhich'the various portsa 0 g" communicate is closed at its inner end by means of asc-rew Asshown in Figure 1, the oscillatory shaft:-

a passes through the cylinder 0 which isprovided at the endsthereofwithstufiing boxes *1, s, and glands t, u, leather packing's being providedtherein. The stutfing box 1 is formed in a cover 4 wliich'is adapted tobe detached so as to permit ready access to the interior of the cylinderfor inspection or re- VVhatI claim and desire to secure by liet tersPatent oi the United Statesisa-v l, A pressure fluid operating deviceconsisting in the combination of 'aworking cylinder having atits-periphery two ports each serving alternately as an inlet and outletport, an oscillatory power transmitting shaft concentric with theworking cylinder; a valveless abutment piece in said cylinder 8X5tending across the annular space between said cylinder and shaft anoscillatory vane or piston on said shaitalso extending across saidannular space and having 'a motive fi'uid passage communicating Withaport at the periphery of the vane or piston'andwith two other ports on aface of the vane or piston and means whereby these last mentioned portsadmit pressure fluid from the said pe-- ripheral port at thecommencement of one stroke of the oscillatory vane: or piston but onlyone of them serves to exhaust pressure fluid; to said peripheralportduring the completion of the other stroke of the oscillatory vane orpiston.

2-.-A pressu're'fluid=-' operating device consisting in the combinationof a working cylinder liavin g at its periphery two ports each servingalternately as an inlet and outlet stroke of'the'o'scillatory vane o'rpiston but only the one of smaller arearisop'erative during thecompletion of the" other stroke of'said vane or iston; v

a In testimony whereoi, I ailixdnysignw time:

JAMES MoKECHNIE.

